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I cannot install or reinstall the latest version of Firefox.

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I have downloaded the latest version of Firefox. I am running Mac OS 10.4.11. The download works fine and I have closed Firefox.

When I go to put the app into the applications folder, as instructed, I am told: "The operation cannot be completed because you do not have sufficient privileges for some of the items."

I am currently running Firefox 3.0.

I have downloaded the latest version of Firefox. I am running Mac OS 10.4.11. The download works fine and I have closed Firefox. When I go to put the app into the applications folder, as instructed, I am told: "The operation cannot be completed because you do not have sufficient privileges for some of the items." I am currently running Firefox 3.0.

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Download a new copy of the Firefox program: http://www.mozilla.com/firefox/all.html

Trash the current Firefox application to do a clean reinstall.

Install the new version that you have downloaded.

Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data.